July 29, 1871

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Features

Writers on Science

The Frere Fountain, Bombay, India

Utility of Patent Laws

Discussion on Mr. Harding's Paper, "Entitled The Application of Steam to Canals" Concluded in Our Issue of July 15.--No. 2

New Mechanical Movement

Crocker's Whiffletree Coupling

Reminiscences of Inventors

Belt Holes--Quarter Turned Belts

Baer's Door Fastener

The Erie Canal Navigation Problem

Our Correspondence

The Spectroscope and its Applications

Answers to Correspondents- July 29, 1871

Scientific Intelligence- July 29, 1871

Queries- July 29, 1871

Recent American and Foreign Patents- July 29, 1871

Official List of Patents- July 29, 1871

Issued by the U. S. Patent Office

Applications for Extension of Patents- July 29, 1871

Departments

Letters

Correspondence- July 29, 1871

Departments

Business and Personal- July 29, 1871

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Digital Issue ?Read or download this issue’s articles online. *A printed copy of this issue is not included. $7.99

Print + Digital All Access Subscription ?Read or download this issue’s articles online. Plus, subscribe to get Print, Online and Tablet access to the next 12 new issues to be released as well as Online access to archives back to 1845. $99.00

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